Indicative
Present Indefinite
I concertina
you concertina
he/she/it concertinas
we concertina
you concertina
they concertina
Present Continuous
I am concertinaing
you are concertinaing
he/she/it is concertinaing
we are concertinaing
you are concertinaing
they are concertinaing
Present Perfect
I have concertinaed
you have concertinaed
he/she/it has concertinaed
we have concertinaed
you have concertinaed
they have concertinaed
Present Perfect Continuous
I have been concertinaing
you have been concertinaing
he/she/it has been concertinaing
we have been concertinaing
you have been concertinaing
they have been concertinaing
Past Indefinite
I concertinaed
you concertinaed
he/she/it concertinaed
we concertinaed
you concertinaed
they concertinaed
Past Continuous
I was concertinaing
you were concertinaing
he/she/it was concertinaing
we were concertinaing
you were concertinaing
they were concertinaing
Past Perfect
I had concertinaed
you had concertinaed
he/she/it had concertinaed
we had concertinaed
you had concertinaed
they had concertinaed
Past Perfect Continuous
I had been concertinaing
you had been concertinaing
he/she/it had been concertinaing
we had been concertinaing
you had been concertinaing
they had been concertinaing
Future Indefinite
I will concertina
you will concertina
he/she/it will concertina
we will concertina
you will concertina
they will concertina
Future Continuous
I will be concertinaing
you will be concertinaing
he/she/it will be concertinaing
we will be concertinaing
you will be concertinaing
they will be concertinaing
Future Perfect
I will have concertinaed
you will have concertinaed
he/she/it will have concertinaed
we will have concertinaed
you will have concertinaed
they will have concertinaed
Future Perfect Continuous
I will have been concertinaing
you will have been concertinaing
he/she/it will have been concertinaing
we will have been concertinaing
you will have been concertinaing
they will have been concertinaing
Conditional
Conditional Present
I would concertina
you would concertina
he/she/it would concertina
we would concertina
you would concertina
they would concertina
Conditional Present Continuous
I would be concertinaing
you would be concertinaing
he/she/it would be concertinaing
we would be concertinaing
you would be concertinaing
they would be concertinaing
Conditional Perfect
I would have concertinaed
you would have concertinaed
he/she/it would have concertinaed
we would have concertinaed
you would have concertinaed
they would have concertinaed
Conditional Perfect Continuous
I would have been concertinaing
you would have been concertinaing
he/she/it would have been concertinaing
we would have been concertinaing
you would have been concertinaing
they would have been concertinaing